body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  margin: 0;
}

#toolbar {
  background: #f4f4f4;
  padding: 10px;
  border-bottom: 1px solid #ccc;
}

#editor {
  flex: 1;
  position: relative;
}

#canvas {
  width: 100%;
  height: 100%;
}
